Abrupt PC Power Down

Before I go answering my own question I'd like to get some other thoughts. I built my own gaming PC last year and it's ran great since. So, I get home from work and boot it up to play some Skyrim and it abruptly shuts down turing off the internal MB lights and all. After a flip of the power switch it boots up just fine. Temperatures are fine and I just cleaned the entire thing out a few weeks back. My guess went immediately to the PSU, but what do you guys think? I'd like to keep this from happening again.

Things are running fine atm and it looks like I'll be playing Skyrim instead of browsing New Egg. :P

Cant really help you without specs.

More than enough, but here it is:

Cant see it, says 404 Media not found.

Your probably right in guessing its your PSU, but it wouldn't hurt to just test your RAM, its easy to do.

That RAM has actually caused me issues in the past and I'm currently only running 4GB because of it. I'm getting some Corsair RAM soon, though. Thing is, I could never find anything wrong with the stuff when I tested it. Odd that, if that were the issue, RAM would cause a system shutdown.Cry0Tek

Well it could be faulty RAM slot, the RAM itself might be fine.